task: #1484

Author: Ivanbyone

README.md

@@ -48,6 +48,7 @@ Have a good contributing!
     - [620. Not Boring Movies](./leetcode/easy/620.%20Not%20Boring%20Movies.sql)
     - [1068. Product Sales Analysis I](./leetcode/easy/1068.%20Product%20Sales%20Analysis%20I.sql)
     - [1407. Top Travellers](./leetcode/easy/1407.%20Top%20Travellers.sql)
+    - [1484. Group Sold Products By The Date](./leetcode/easy/1484.%20Group%20Sold%20Products%20By%20The%20Date.sql)
 2. [Medium](./leetcode/medium/)
     - [176. Second Highest Salary](./leetcode/medium/176.%20Second%20Highest%20Salary.sql)
     - [184. Department Highest Salary](./leetcode/medium/184.%20Department%20Highest%20Salary.sql)

leetcode/easy/1484. Group Sold Products By The Date.sql

@@ -0,0 +1,30 @@
+/*
+Question 1484. Group Sold Products By The Date
+Link: https://leetcode.com/problems/group-sold-products-by-the-date/description/
+
+Table Activities:
+
++-------------+---------+
+| Column Name | Type    |
++-------------+---------+
+| sell_date   | date    |
+| product     | varchar |
++-------------+---------+
+There is no primary key (column with unique values) for this table. It may contain duplicates.
+Each row of this table contains the product name and the date it was sold in a market.
+ 
+
+Write a solution to find for each date the number of different products sold and their names.
+
+The sold products names for each date should be sorted lexicographically.
+
+Return the result table ordered by sell_date.
+*/
+
+SELECT 
+    sell_date,
+    COUNT(DISTINCT product) AS num_sold,
+    STRING_AGG(DISTINCT product, ',' ORDER BY product) AS products
+FROM Activities
+GROUP BY 1
+ORDER BY 1